APA
National Endowment for the Humanities, . (1993). Summer seminars for school teachers: guidelines and application forms for participants. Washington, D.C: The Endowment.
Chicago
National Endowment for the Humanities, . 1993. Summer seminars for school teachers: guidelines and application forms for participants. Washington, D.C: The Endowment.
Harvard
National Endowment for the Humanities, . (1993). Summer seminars for school teachers: guidelines and application forms for participants. Washington, D.C: The Endowment.
MLA
National Endowment for the Humanities, . Summer seminars for school teachers: guidelines and application forms for participants. Washington, D.C: The Endowment. 1993.